Intravascular (blood pool) MRI contrast agents

Intravascular MRI contrast agents normally remain confined to the intravascular space, compared to Gd-DTPA which distributes throughout the extracellular fluid space. This is a result of intravascular agents having a molecular weight of approximately 70,000 and above, compared to a molecular weight of 590 for Gd-DTPA. 

There are several advantages of intravascular agents:

  • they can assess perfusion in areas of ischemia and provide information about capillary permeability in areas of reperfusion
  • they can show the extent of tumor neovascularity and associated permeability changes
  • they are useful in studies requiring prolonged imaging. 

Three types of intravascular contrast agents will be discussed separately: 


MRI physics
Share article

Article Information

rID: 21772
Section: Physics
Synonyms or Alternate Spellings:
  • Intravascular MRI contrast agents
  • Blood pool MRI contrast agents

Support Radiopaedia and see fewer ads

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.